Inserted by few red phosphorus, expanded graphite exhibited a high reversible specific capacity of 418 mAh g⁻¹ at a current density of 100 mA g⁻¹. At 500 mAh g⁻¹, 296 mAh g⁻¹ with a retention of 83.3% after 1000 cycles at room temperature and 228 mAh g⁻¹ with a retention of nearly 100% after 100 cycles at −10 °C were obtained. Furthermore, the results suggest actual availability under extreme cold conditions (−50 °C).

中文翻译：

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少量红磷插入膨胀石墨以改善室温和低温下的钠储存

通过少量红磷插入，膨胀石墨在100 mA g ^-1的电流密度下表现出418 mAh g ^-1的高可逆比容量。在 500 mAh g ^{-1 下}，获得了 296 mAh g ^-1在室温下 1000 次循环后保留率为 83.3% 和 228 mAh g ^-1在 -10 °C 下 100 次循环后保留率接近 100%。此外，结果表明极端寒冷条件 (-50 °C) 下的实际可用性。